Creating Pastina Italian Penicillin is straightforward. Follow these steps to make a delicious and comforting dish:

1. Heat the Broth: In a large pot, bring the chicken broth to a gentle boil over medium heat.
2. Sauté Aromatics: In a separate pan, heat the olive oil. Add the chopped onion and garlic, sautéing until the onion becomes translucent.
3. Add Pastina: Once the broth is boiling, stir in the pastina. Cook according to package instructions, usually about 5-7 minutes.
4. Combine Mixtures: Add the sautéed onions and garlic to the pot with the pastina.
5. Season: Season the broth with salt and pepper to taste. If using spinach, add it at this point and let it wilt in the heat.
6. Finish with Cheese: Remove from heat and stir in the grated Parmesan cheese until melted and creamy.
7. Serve Hot: Ladle the pastina into bowls, garnishing with fresh parsley for added flavor and presentation.

These steps will guide you in creating this incredible dish effortlessly.